HAT-P-39 is 2,273 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 6,430 K star; the first was found in 2012 by transit (HATNet).
Fly there in 3DHAT-P-39 b goes round its star every 3.54 days, 25 times as often as Mercury goes round the Sun.
HAT-P-39 is one of 2 stars in its system. The position of the other star is not catalogued, so only HAT-P-39 and its planets are drawn.
| Surface temperature | 6,430 K |
| Mass | 1.404 solar masses |
| Radius | 1.625 solar radii |
| Luminosity | 4.046 times the Sun |
| Apparent magnitude | 12.282 |
| Age | about 2 billion years |
| Distance from the Sun | 2273.3 light-years (697.0 parsecs) |
| Position (J2000) | RA 113.7583°, Dec 17.8300° |
| Constellation | Gemini |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HAT-P-39 b | 3.54 days | 0.0509 AU | 17.609 R⊕ | 190.37 M⊕ | Transit, 2012 |
Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.